Reinsurance (Tables)

6 Months Ended

Sep. 30, 2012

Reinsurance [Abstract]

Reinsurance Effect on Premiums Written and Earned

	Three Months Ended
	September 30, 2012						September 30, 2011
	Written			Earned			Written			Earned
Direct premiums	$	1,465		$	1,011		$	436		$	324
Assumed premiums—nonaffiliate		3,320			2,957			2,572			2,434
Ceded premiums—nonaffiliate		(929	)		(929	)		(398	)		(398	)
Net premiums	$	3,856		$	3,039		$	2,610		$	2,360
	Six Months Ended
	September 30, 2012						September 30, 2011
	Written			Earned			Written			Earned
Direct premiums	$	2,776		$	1,818		$	629		$	411
Assumed premiums—nonaffiliate		6,653			5,729			3,481			3,214
Ceded premiums—nonaffiliate		(1,692	)		(1,692	)		(513	)		(513	)
Net premiums	$	7,737		$	5,855		$	3,597		$	3,112